[PATCH] powerpc: fix spider-pic affinity setting

[Arnd Bergmann <arnd.bergmann@de.ibm.com>]

As noticed by Milton Miller, setting the initial affinity in
spider-pic can go wrong if the target node field was not orinally
empty.

Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>

--- linus-2.6.orig/arch/powerpc/platforms/cell/spider-pic.c
+++ linus-2.6/arch/powerpc/platforms/cell/spider-pic.c
@@ -88,7 +88,7 @@ static void spider_enable_irq(unsigned i
 	void __iomem *cfg = spider_get_irq_config(irq);
 	irq = spider_get_nr(irq);
 
-	out_be32(cfg, in_be32(cfg) | 0x3107000eu | nodeid);
+	out_be32(cfg, (in_be32(cfg) & ~0xf0)| 0x3107000eu | nodeid);
 	out_be32(cfg + 4, in_be32(cfg + 4) | 0x00020000u | irq);
 }
 
-
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